Question 512 Marks
What is the force of gravity on a body of mass $150\ kg$ lying on the surface of the earth?
(Mass of earth $=6 \times 10^{24} kg$; Radius of earth $=6.4 \times 10^6 m ; G =6.7 \times 10^{-11} Nm ^2 / kg ^2$ )
(Mass of earth $=6 \times 10^{24} kg$; Radius of earth $=6.4 \times 10^6 m ; G =6.7 \times 10^{-11} Nm ^2 / kg ^2$ )
Answer
View full question & answer→Force due to gravity, $\text{F}=\text{G}\times\frac{\text{m}\times\text{M}}{\text{d}^2}$
$\text{F}=6.7\times10^{-11}\times\frac{6\times10^{24}\times150}{(6.4\times10^6)^2}$
$\text{F}=1472\text{N}$
$\text{F}=6.7\times10^{-11}\times\frac{6\times10^{24}\times150}{(6.4\times10^6)^2}$
$\text{F}=1472\text{N}$
